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Variable-speed-drive-based monitoring and diagnostic methods for pump, compressor, and fan systems
(Lappeenranta-Lahti University of Technology LUT, 2021-02-05)
Pumps, fans, and compressors account for nearly a third of the global consumption of electricity. Variable-speed drives (VSD) enable energy-efficient capacity control of these devices, and have thus become a common component ...
Evaluation of open-source FEM software performance in analysing converter-fed induction machine losses
(Lappeenranta-Lahti University of Technology LUT, 2022-01-28)
Converter-fed induction machines are widely used in variable speed applications. They are renowned for their good controllability, low manufacturing cost, and robustness. These machines are used in various applications ...
Analysis of theory and methodology used in determination of electric motor drive system losses and efficiency
(Lappeenranta-Lahti University of Technology LUT, 2021-04-23)
This research is divided into two main parts: loss determination of motors, converters, and motor drive systems and determination of measurement uncertainty. With its accurate measurements and data analysis, the work ...